Mercurial > hg > nginx
annotate src/core/ngx_palloc.c @ 605:5dac8c7fb71b release-0.3.24
nginx-0.3.24-RELEASE import
*) Workaround: for bug in FreeBSD kqueue.
*) Bugfix: now a response generated by the "post_action" directive is
not transferred to a client.
*) Bugfix: the memory leaks were occurring if many log files were used.
*) Bugfix: the first "proxy_redirect" directive was working inside one
location.
*) Bugfix: on 64-bit platforms segmentation fault may occurred on start
if the many names were used in the "server_name" directives; the bug
had appeared in 0.3.18.
| author | Igor Sysoev <igor@sysoev.ru> |
|---|---|
| date | Wed, 01 Feb 2006 18:22:15 +0000 |
| parents | d4e858a5751a |
| children | 65bf042c0b4f |
| rev | line source |
|---|---|
|
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1 |
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2 /* |
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3 * Copyright (C) Igor Sysoev |
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4 */ |
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5 |
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6 |
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7 #include <ngx_config.h> |
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8 #include <ngx_core.h> |
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9 |
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10 |
| 501 | 11 ngx_pool_t * |
| 12 ngx_create_pool(size_t size, ngx_log_t *log) | |
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13 { |
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14 ngx_pool_t *p; |
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15 |
| 501 | 16 p = ngx_alloc(size, log); |
| 17 if (p == NULL) { | |
| 527 | 18 return NULL; |
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19 } |
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20 |
| 485 | 21 p->last = (u_char *) p + sizeof(ngx_pool_t); |
| 22 p->end = (u_char *) p + size; | |
| 581 | 23 p->current = p; |
| 24 p->chain = NULL; | |
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25 p->next = NULL; |
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26 p->large = NULL; |
| 509 | 27 p->cleanup = NULL; |
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28 p->log = log; |
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29 |
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30 return p; |
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31 } |
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32 |
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33 |
| 501 | 34 void |
| 35 ngx_destroy_pool(ngx_pool_t *pool) | |
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36 { |
| 509 | 37 ngx_pool_t *p, *n; |
| 38 ngx_pool_large_t *l; | |
| 39 ngx_pool_cleanup_t *c; | |
| 40 | |
| 41 for (c = pool->cleanup; c; c = c->next) { | |
| 42 if (c->handler) { | |
| 43 c->handler(c->data); | |
| 44 } | |
| 45 } | |
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46 |
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47 for (l = pool->large; l; l = l->next) { |
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48 |
| 461 | 49 ngx_log_debug1(NGX_LOG_DEBUG_ALLOC, pool->log, 0, "free: %p", l->alloc); |
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50 |
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51 if (l->alloc) { |
| 477 | 52 ngx_free(l->alloc); |
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53 } |
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54 } |
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55 |
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257
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56 #if (NGX_DEBUG) |
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57 |
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128
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58 /* |
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59 * we could allocate the pool->log from this pool |
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60 * so we can not use this log while the free()ing the pool |
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61 */ |
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126
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62 |
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63 for (p = pool, n = pool->next; /* void */; p = n, n = n->next) { |
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64 ngx_log_debug2(NGX_LOG_DEBUG_ALLOC, pool->log, 0, |
| 461 | 65 "free: %p, unused: %uz", p, p->end - p->last); |
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66 |
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67 if (n == NULL) { |
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68 break; |
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69 } |
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70 } |
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71 |
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39
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72 #endif |
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73 |
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74 for (p = pool, n = pool->next; /* void */; p = n, n = n->next) { |
| 477 | 75 ngx_free(p); |
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76 |
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77 if (n == NULL) { |
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78 break; |
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79 } |
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80 } |
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81 } |
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82 |
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83 |
| 501 | 84 void * |
| 85 ngx_palloc(ngx_pool_t *pool, size_t size) | |
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86 { |
| 485 | 87 u_char *m; |
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88 ngx_pool_t *p, *n; |
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89 ngx_pool_large_t *large, *last; |
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90 |
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91 if (size <= (size_t) NGX_MAX_ALLOC_FROM_POOL |
| 485 | 92 && size <= (size_t) (pool->end - (u_char *) pool) |
| 589 | 93 - (size_t) ngx_align_ptr(sizeof(ngx_pool_t), NGX_ALIGNMENT)) |
|
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94 { |
| 581 | 95 for (p = pool->current; /* void */ ; p = p->next) { |
| 589 | 96 |
| 97 if (size < sizeof(int) || (size & 1)) { | |
| 98 m = p->last; | |
| 99 | |
| 100 } else { | |
| 101 m = ngx_align_ptr(p->last, NGX_ALIGNMENT); | |
| 102 } | |
|
104
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103 |
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104 if ((size_t) (p->end - m) >= size) { |
| 452 | 105 p->last = m + size; |
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106 |
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107 return m; |
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108 } |
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109 |
| 581 | 110 if ((size_t) (p->end - m) < NGX_ALIGNMENT) { |
| 583 | 111 pool->current = p->next; |
| 581 | 112 } |
| 113 | |
| 114 if (p->next == NULL) { | |
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115 break; |
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39
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116 } |
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117 } |
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118 |
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119 /* allocate a new pool block */ |
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120 |
| 501 | 121 n = ngx_create_pool((size_t) (p->end - (u_char *) p), p->log); |
| 122 if (n == NULL) { | |
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123 return NULL; |
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124 } |
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125 |
| 583 | 126 if (pool->current == NULL) { |
| 127 pool->current = n; | |
| 581 | 128 } |
| 129 | |
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130 p->next = n; |
| 589 | 131 m = ngx_align_ptr(n->last, NGX_ALIGNMENT); |
| 452 | 132 n->last = m + size; |
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133 |
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134 return m; |
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135 } |
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136 |
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137 /* allocate a large block */ |
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138 |
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139 large = NULL; |
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140 last = NULL; |
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141 |
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142 if (pool->large) { |
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Igor Sysoev <igor@sysoev.ru>
parents:
429
diff
changeset
|
143 for (last = pool->large; /* void */ ; last = last->next) { |
|
156
afc333135a6b
nginx-0.0.1-2003-10-23-10:13:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
133
diff
changeset
|
144 if (last->alloc == NULL) { |
|
afc333135a6b
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Igor Sysoev <igor@sysoev.ru>
parents:
133
diff
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|
145 large = last; |
|
afc333135a6b
nginx-0.0.1-2003-10-23-10:13:16 import
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parents:
133
diff
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|
146 last = NULL; |
|
afc333135a6b
nginx-0.0.1-2003-10-23-10:13:16 import
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parents:
133
diff
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|
147 break; |
|
afc333135a6b
nginx-0.0.1-2003-10-23-10:13:16 import
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parents:
133
diff
changeset
|
148 } |
|
0
4eff17414a43
nginx-0.0.1-2002-08-06-20:39:45 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
149 |
|
156
afc333135a6b
nginx-0.0.1-2003-10-23-10:13:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
133
diff
changeset
|
150 if (last->next == NULL) { |
|
afc333135a6b
nginx-0.0.1-2003-10-23-10:13:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
133
diff
changeset
|
151 break; |
|
0
4eff17414a43
nginx-0.0.1-2002-08-06-20:39:45 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
152 } |
|
4eff17414a43
nginx-0.0.1-2002-08-06-20:39:45 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
153 } |
|
156
afc333135a6b
nginx-0.0.1-2003-10-23-10:13:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
133
diff
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|
154 } |
|
0
4eff17414a43
nginx-0.0.1-2002-08-06-20:39:45 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
155 |
|
156
afc333135a6b
nginx-0.0.1-2003-10-23-10:13:16 import
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parents:
133
diff
changeset
|
156 if (large == NULL) { |
| 501 | 157 large = ngx_palloc(pool, sizeof(ngx_pool_large_t)); |
| 158 if (large == NULL) { | |
|
194
2357fa41738a
nginx-0.0.1-2003-11-21-09:30:49 import
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parents:
156
diff
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|
159 return NULL; |
|
2357fa41738a
nginx-0.0.1-2003-11-21-09:30:49 import
Igor Sysoev <igor@sysoev.ru>
parents:
156
diff
changeset
|
160 } |
|
2357fa41738a
nginx-0.0.1-2003-11-21-09:30:49 import
Igor Sysoev <igor@sysoev.ru>
parents:
156
diff
changeset
|
161 |
|
156
afc333135a6b
nginx-0.0.1-2003-10-23-10:13:16 import
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parents:
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|
162 large->next = NULL; |
|
afc333135a6b
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parents:
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diff
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|
163 } |
|
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nginx-0.0.1-2003-10-23-10:13:16 import
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parents:
133
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|
164 |
|
347
f48d579daf78
nginx-0.0.3-2004-06-08-20:26:37 import
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parents:
346
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|
165 #if 0 |
| 501 | 166 p = ngx_memalign(ngx_pagesize, size, pool->log); |
| 167 if (p == NULL) { | |
|
194
2357fa41738a
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156
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|
168 return NULL; |
|
2357fa41738a
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parents:
156
diff
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|
169 } |
|
347
f48d579daf78
nginx-0.0.3-2004-06-08-20:26:37 import
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parents:
346
diff
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|
170 #else |
| 501 | 171 p = ngx_alloc(size, pool->log); |
| 172 if (p == NULL) { | |
|
347
f48d579daf78
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parents:
346
diff
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|
173 return NULL; |
|
f48d579daf78
nginx-0.0.3-2004-06-08-20:26:37 import
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parents:
346
diff
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|
174 } |
|
f48d579daf78
nginx-0.0.3-2004-06-08-20:26:37 import
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346
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|
175 #endif |
|
0
4eff17414a43
nginx-0.0.1-2002-08-06-20:39:45 import
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parents:
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changeset
|
176 |
|
156
afc333135a6b
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parents:
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|
177 if (pool->large == NULL) { |
|
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|
178 pool->large = large; |
|
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diff
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|
179 |
|
afc333135a6b
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parents:
133
diff
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|
180 } else if (last) { |
|
afc333135a6b
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parents:
133
diff
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|
181 last->next = large; |
|
afc333135a6b
nginx-0.0.1-2003-10-23-10:13:16 import
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parents:
133
diff
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|
182 } |
|
0
4eff17414a43
nginx-0.0.1-2002-08-06-20:39:45 import
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parents:
diff
changeset
|
183 |
|
156
afc333135a6b
nginx-0.0.1-2003-10-23-10:13:16 import
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parents:
133
diff
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|
184 large->alloc = p; |
|
afc333135a6b
nginx-0.0.1-2003-10-23-10:13:16 import
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parents:
133
diff
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|
185 |
|
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133
diff
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|
186 return p; |
|
afc333135a6b
nginx-0.0.1-2003-10-23-10:13:16 import
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parents:
133
diff
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|
187 } |
|
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nginx-0.0.1-2003-10-23-10:13:16 import
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parents:
133
diff
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|
188 |
|
0
4eff17414a43
nginx-0.0.1-2002-08-06-20:39:45 import
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parents:
diff
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|
189 |
| 501 | 190 ngx_int_t |
| 191 ngx_pfree(ngx_pool_t *pool, void *p) | |
|
156
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nginx-0.0.1-2003-10-23-10:13:16 import
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parents:
133
diff
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|
192 { |
|
afc333135a6b
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133
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|
193 ngx_pool_large_t *l; |
|
0
4eff17414a43
nginx-0.0.1-2002-08-06-20:39:45 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
194 |
|
156
afc333135a6b
nginx-0.0.1-2003-10-23-10:13:16 import
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parents:
133
diff
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|
195 for (l = pool->large; l; l = l->next) { |
|
afc333135a6b
nginx-0.0.1-2003-10-23-10:13:16 import
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parents:
133
diff
changeset
|
196 if (p == l->alloc) { |
|
257
70e1c7d2b83d
nginx-0.0.2-2004-02-11-20:08:49 import
Igor Sysoev <igor@sysoev.ru>
parents:
194
diff
changeset
|
197 ngx_log_debug1(NGX_LOG_DEBUG_ALLOC, pool->log, 0, |
| 461 | 198 "free: %p", l->alloc); |
| 477 | 199 ngx_free(l->alloc); |
|
156
afc333135a6b
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parents:
133
diff
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|
200 l->alloc = NULL; |
|
436
9549fc9508e5
nginx-0.0.11-2004-09-23-10:32:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
429
diff
changeset
|
201 |
|
9549fc9508e5
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parents:
429
diff
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|
202 return NGX_OK; |
|
156
afc333135a6b
nginx-0.0.1-2003-10-23-10:13:16 import
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parents:
133
diff
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|
203 } |
|
0
4eff17414a43
nginx-0.0.1-2002-08-06-20:39:45 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
204 } |
|
436
9549fc9508e5
nginx-0.0.11-2004-09-23-10:32:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
429
diff
changeset
|
205 |
|
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parents:
429
diff
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|
206 return NGX_DECLINED; |
|
0
4eff17414a43
nginx-0.0.1-2002-08-06-20:39:45 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
207 } |
|
4eff17414a43
nginx-0.0.1-2002-08-06-20:39:45 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
208 |
|
156
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parents:
133
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|
209 |
| 501 | 210 void * |
| 211 ngx_pcalloc(ngx_pool_t *pool, size_t size) | |
|
0
4eff17414a43
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parents:
diff
changeset
|
212 { |
|
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parents:
diff
changeset
|
213 void *p; |
|
4eff17414a43
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parents:
diff
changeset
|
214 |
|
4eff17414a43
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parents:
diff
changeset
|
215 p = ngx_palloc(pool, size); |
|
39
83fa61cd3d2f
nginx-0.0.1-2002-12-24-20:30:59 import
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parents:
26
diff
changeset
|
216 if (p) { |
|
0
4eff17414a43
nginx-0.0.1-2002-08-06-20:39:45 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
217 ngx_memzero(p, size); |
|
39
83fa61cd3d2f
nginx-0.0.1-2002-12-24-20:30:59 import
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parents:
26
diff
changeset
|
218 } |
|
0
4eff17414a43
nginx-0.0.1-2002-08-06-20:39:45 import
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parents:
diff
changeset
|
219 |
|
4eff17414a43
nginx-0.0.1-2002-08-06-20:39:45 import
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parents:
diff
changeset
|
220 return p; |
|
4eff17414a43
nginx-0.0.1-2002-08-06-20:39:45 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
221 } |
|
346
55e496a8ece3
nginx-0.0.3-2004-06-06-23:49:18 import
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parents:
297
diff
changeset
|
222 |
| 509 | 223 |
| 605 | 224 void * |
| 225 ngx_shalloc(size_t size) | |
| 226 { | |
| 227 u_char *p; | |
| 228 | |
| 229 if (size < sizeof(int) || (size & 1)) { | |
| 230 p = ngx_cycle->shm_last; | |
| 231 | |
| 232 } else { | |
| 233 p = ngx_align_ptr(ngx_cycle->shm_last, NGX_ALIGNMENT); | |
| 234 } | |
| 235 | |
| 236 if ((size_t) (ngx_cycle->shm_end - p) >= size) { | |
| 237 ngx_cycle->shm_last = p + size; | |
| 238 return p; | |
| 239 } | |
| 240 | |
| 241 ngx_log_error(NGX_LOG_EMERG, ngx_cycle->log, 0, | |
| 242 "allocation of %uz bytes in shared memory failed, " | |
| 243 "only %uz are available", | |
| 244 size, ngx_cycle->shm_end - ngx_cycle->shm_last); | |
| 245 | |
| 246 return NULL; | |
| 247 } | |
| 248 | |
| 249 | |
| 250 void * | |
| 251 ngx_shcalloc(size_t size) | |
| 252 { | |
| 253 void *p; | |
| 254 | |
| 255 p = ngx_shalloc(size); | |
| 256 if (p) { | |
| 257 ngx_memzero(p, size); | |
| 258 } | |
| 259 | |
| 260 return p; | |
| 261 } | |
| 262 | |
| 263 | |
| 509 | 264 ngx_pool_cleanup_t * |
| 563 | 265 ngx_pool_cleanup_add(ngx_pool_t *p, size_t size) |
| 509 | 266 { |
| 267 ngx_pool_cleanup_t *c; | |
| 268 | |
| 269 c = ngx_palloc(p, sizeof(ngx_pool_cleanup_t)); | |
| 270 if (c == NULL) { | |
| 271 return NULL; | |
| 272 } | |
| 273 | |
| 563 | 274 if (size) { |
| 275 c->data = ngx_palloc(p, size); | |
| 276 if (c->data == NULL) { | |
| 277 return NULL; | |
| 278 } | |
| 279 | |
| 280 } else { | |
| 281 c->data = NULL; | |
| 282 } | |
| 283 | |
| 284 c->handler = NULL; | |
| 509 | 285 c->next = p->cleanup; |
| 286 | |
| 287 p->cleanup = c; | |
| 288 | |
| 563 | 289 ngx_log_debug1(NGX_LOG_DEBUG_ALLOC, p->log, 0, "add cleanup: %p", c); |
| 290 | |
| 509 | 291 return c; |
| 292 } | |
| 293 | |
| 294 | |
| 295 void | |
| 296 ngx_pool_cleanup_file(void *data) | |
| 297 { | |
| 298 ngx_pool_cleanup_file_t *c = data; | |
| 299 | |
| 563 | 300 ngx_log_debug2(NGX_LOG_DEBUG_ALLOC, c->log, 0, "run cleanup: %p, fd:%d", |
| 301 c, c->fd); | |
| 302 | |
| 509 | 303 if (ngx_close_file(c->fd) == NGX_FILE_ERROR) { |
| 304 ngx_log_error(NGX_LOG_ALERT, c->log, ngx_errno, | |
| 305 ngx_close_file_n " \"%s\" failed", c->name); | |
| 306 } | |
| 307 } | |
| 308 | |
| 309 | |
|
346
55e496a8ece3
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parents:
297
diff
changeset
|
310 #if 0 |
|
55e496a8ece3
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297
diff
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|
311 |
| 501 | 312 static void * |
| 313 ngx_get_cached_block(size_t size) | |
|
346
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parents:
297
diff
changeset
|
314 { |
|
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parents:
297
diff
changeset
|
315 void *p; |
|
55e496a8ece3
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parents:
297
diff
changeset
|
316 ngx_cached_block_slot_t *slot; |
|
55e496a8ece3
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parents:
297
diff
changeset
|
317 |
|
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nginx-0.0.3-2004-06-06-23:49:18 import
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parents:
297
diff
changeset
|
318 if (ngx_cycle->cache == NULL) { |
|
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parents:
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diff
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|
319 return NULL; |
|
55e496a8ece3
nginx-0.0.3-2004-06-06-23:49:18 import
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parents:
297
diff
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|
320 } |
|
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nginx-0.0.3-2004-06-06-23:49:18 import
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parents:
297
diff
changeset
|
321 |
|
55e496a8ece3
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parents:
297
diff
changeset
|
322 slot = &ngx_cycle->cache[(size + ngx_pagesize - 1) / ngx_pagesize]; |
|
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nginx-0.0.3-2004-06-06-23:49:18 import
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parents:
297
diff
changeset
|
323 |
|
55e496a8ece3
nginx-0.0.3-2004-06-06-23:49:18 import
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parents:
297
diff
changeset
|
324 slot->tries++; |
|
55e496a8ece3
nginx-0.0.3-2004-06-06-23:49:18 import
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parents:
297
diff
changeset
|
325 |
|
55e496a8ece3
nginx-0.0.3-2004-06-06-23:49:18 import
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parents:
297
diff
changeset
|
326 if (slot->number) { |
|
55e496a8ece3
nginx-0.0.3-2004-06-06-23:49:18 import
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parents:
297
diff
changeset
|
327 p = slot->block; |
|
55e496a8ece3
nginx-0.0.3-2004-06-06-23:49:18 import
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parents:
297
diff
changeset
|
328 slot->block = slot->block->next; |
|
55e496a8ece3
nginx-0.0.3-2004-06-06-23:49:18 import
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parents:
297
diff
changeset
|
329 slot->number--; |
|
55e496a8ece3
nginx-0.0.3-2004-06-06-23:49:18 import
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parents:
297
diff
changeset
|
330 return p; |
|
55e496a8ece3
nginx-0.0.3-2004-06-06-23:49:18 import
Igor Sysoev <igor@sysoev.ru>
parents:
297
diff
changeset
|
331 } |
|
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nginx-0.0.3-2004-06-06-23:49:18 import
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332 |
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nginx-0.0.3-2004-06-06-23:49:18 import
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333 return NULL; |
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nginx-0.0.3-2004-06-06-23:49:18 import
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334 } |
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nginx-0.0.3-2004-06-06-23:49:18 import
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335 |
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nginx-0.0.3-2004-06-06-23:49:18 import
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336 #endif |